Add more properties to position fallback (#9244)

Author: xiaochengh

css-anchor-position-1/Overview.bs

@@ -948,6 +948,9 @@ The ''@try'' rule only <dfn lt="accepted @try properties">accepts</dfn>
 the following [=properties=]:
 
 * [=inset properties=]
+* [=margin properties=]
+* [=border properties=]
+* [=padding properties=]
 * [=sizing properties=]
 * [=box alignment properties=]